| 摘要 |
The rotary cutting blade is mounted on a cutting machine which dispenses and cuts sheet material. The cutting machine includes a frame for supporting a cutting table top and a dispenser for supporting a roll of floor co vering material. The rotary disk shaped cutting blade is mounted on a support block the frame below the table top for movement along a slot in the cutting table. A cabl e or chain driven rotary drive drives the block back and forth and at the same time provides the rotary motion to the cutting disk in a direction such that a leadin g edge of the disk moves upwardly relative to the floor covering material as it cuts. T he chain passes over a sprocket on the block which carries a clutch so that the clu tch slips when the block reaches one end of the slot and allows the chain to continu e driving the rotary blade. A rotary sharpening disk is mounted at one end of the slot and is driven by the chain so as to rotate against the blade in a sharpening act ion while the block remains stationary.
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